85.05% is the change from 281 to 520
Calculation steps:
[( 520 - 281 ) ÷ 281] x 100 = 85.05%
Formula
Percentage change = [(520 - 281) / 281] x 100
Subtract the new number by the original number
520 - 281 = 239
239 ÷ 281 = 0.8505338078291815
0.8505338078291815 x 100 = 85.05%